BENCHMARKING PERSONALLY IDENTIFIABLE INFORMATION (PII) ANONYMIZATION STRATEGIES FOR BRAZILIAN PORTUGUESE: FROM REGEX TO HYBRID LLM APPROACHES
The Brazilian General Data Protection Law (LGPD) requires the anonymization of personally identifiable information (PII) before data sharing. We evaluate six anonymization strategies (regex, NER, zero-shot LLM, few-shot LLM, structured extraction, and a hybrid cascade) on 82 Brazilian Portuguese documents with 1,558 PI...